Keproving 3PCS Universal Diving Port Plug with O-Ring, 1 HP & 2 LP, 3/8-24 & 7/16-20 Thread, Copper Chrome Plated for Scuba Diving First Stage Regulator

["Made of premium copper chrome plated material, keeping stable performance for long time use.","Matched O-rings provide great tight sealing, reliable for underwater diving scenarios.","Fits standard HP and LP ports perfectly, compatible with 3/8-24 and 7/16-20 thread sizes.","Package includes 1 high pressure plug and 2 low pressure plugs, easy direct replacement for scuba first stage regulator.","Featured non-slip construction to protect parts from wrench damage when installing."]